Improvement in post-augers



C. W. POOL.

POST AUGER.

No.184,900. razen ped-Nov. 2 8, '1876.-

INV

ATTORNEYS.

' mmssss: CZM.

lvrrno 'm'rns PATENT CHARLES W. POOL, OF WISOOY, NEW YORK, ASSIGNOR TO HIMSELF AND JAMES W. VAN BUSKIRK, OF SAME PLACE.

IMPROVEMENT IN POST-AUGERS.

Specification forming part of Letters Patent No. 184,900, dated November 28, 1876; application filed July 31, 1876.

To all whom it may concern Be it known that 1, CHARLES W. PooL, of Wiscoy, in the county of Allegany and State of New York, have invented a new and Improved Post-Auger, of which the following is a specification Figure 1 is a side elevation, with a portion of one side broken away to show the details of construction. Fig. 2 is a section on line a; a; in Fig. 1. Fig. 3 is a transverse section on line y y in Fig. 1.

Similar letters of reference indicate corresponding parts.

My invention relates to angers for boring post-holes; and it consists in the combination of a pair of blades with adjustable supportingarms, which are secured in a socket formed in the'lower end of a shank, provided with a suitable handle.

A A are blades, that are arc-shaped in crosssection, and are cut away at their cuttingedges a, on a curve forming a part of a circle, and on the opposite edge I) the blade is cut away on an ogee. These blades are riveted to the curved arms 0 c, as shown at d, which are held in a mortise, e, in the shank B by a key, f. The arms 0 c overlap each other in the mortise, and are capable of being moved to vary the size of the hole to be bored. The hladesA A are twisted on the arms 0 0, so as to throw the cutting-edges u, out, as shown in Fig. 3. This, together with the converging of the lower extremities of the blades, causes it to draw itself into the earth. The shank B is provided with a suitable handle, 0, for turning the auger.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- The combination of the curved blades A A, shank B, having socket e, and arms 0 c, ,fitting in said socket, and secured by means of a wedge, f, or its equivalent, substantially as and for the purpose described.

CHARLES W. POOL. Witnesses:

W. G. WHITNEY,

DEWITT G. GRANGER. 

